Manganese dioxide (mno2(s), hf = –520. 0 kj) reacts with aluminum to form aluminum oxide (ai2o3(s), hf = –1699. 8 kj/mol) and manganese according to the equation below. What is the enthalpy of the reaction? use. –1,839. 6 kj –1,179. 8 kj 1,179. 8 kj 1,839. 6 kj.

The students who were in favor of adopting the new curriculum wrote editorials for the local newspaper which of these best describes how the information in the editorials is different from the information in the feature story

What is life ? a: hell b: gods bible c: or depression

Which scenario describes intraspecific, indirect competition? a. a peacock defends its territory against another peacock. b. lions and hyenas compete for the same prey animals. c. a male black bear eats fish in an area of a lake, so other black bears can’t. d. different species of birds fight over spilled popcorn on the ground.